Joachim Fuchsberger
饰 Richard Gordon
Siegfried Lowitz
饰 (Ober-)Inspektor Elk (German version) /(Chief) Inspector Hedge (English version)
Elfie von Kalckreuth
饰 Ella Bennet
Dieter Eppler
饰 Joshua Broad
Jochen Brockmann
饰 Philo Johnson
Ernst Fritz Fürbringer
饰 Sir Archibald
Fritz Rasp
饰 Ezra Maitland
Erwin Strahl
饰 Sergeant Balder (German version) /Sergeant Barclay (English version)
Michel Hildesheim
饰 Mills
Charlotte Scheier-Herold
饰 Lady Maggie Farnsworth (German version) /Lady Aubrid Farnsworth (English version)
Reinhard Kolldehoff
饰 Lew Brady
Benno Gellenbeck
饰 Inspector Ghent (voice) (uncredited)
Werner Hedman
饰 Inspektor Genter (German version) /Inspector Higgins (English version) (uncredited)
Günther Jerschke
饰 Voice of Newsreader on Radio (voice) (uncredited)
Holger Munk
饰 Sgt. Rubby (Sir Archibalds Vorzimmer-Sergeant) (uncredited)
